Concussion incidence increased, while severity remained unchanged, during the 4 years of this study. Playing more than 25 matches in the 2015/2016 season meant that sustaining concussion was more likely than not sustaining concussion. The 38% greater injury risk after concussive injury (compared with non-concussive injury) suggests return to play protocols warrant investigation.

In this article, we conduct a comprehensive study of online antagonistic content related to Jewish identity posted on Twitter between October 2015 and October 2016 by UK-based users. We trained a scalable supervised machine learning classifier to identify antisemitic content to reveal patterns of online antisemitism perpetration at the source. We built statistical models to analyze the inhibiting and enabling factors of the size (number of retweets) and survival (duration of retweets) of information flows in addition to the production of online antagonistic content. Despite observing high temporal variability, we found that only a small proportion (0.7%) of the content was antagonistic. We also found that antagonistic content was less likely to disseminate in size or survive for a longer period. Information flows from antisemitic agents on Twitter gained less traction, while information flows emanating from capable and willing counter-speech actors—that is, Jewish organizations—had a significantly higher size and survival rates. This study is the first to demonstrate that Sampson’s classic sociological concept of collective efficacy can be observed on social media (SM). Our findings suggest that when organizations aiming to counter harmful narratives become active on SM platforms, their messages propagate further and achieve greater longevity than antagonistic messages. On SM, counter-speech posted by credible, capable and willing actors can be an effective measure to prevent harmful narratives. Based on our findings, we underline the value of the work by community organizations in reducing the propagation of cyberhate and increasing trust in SM platforms.

Community-acquired AABD is not uncommon in infants presenting with acute or chronic forms even without fever or leukocytosis. When suspected, discontinuation of antibiotics is a good policy if facilities for bacterial culture with cytotoxin assays are limited. The characteristic endoscopic or histopathologic pseudomembranes are encountered only in a small percentage (26%). Rational use of antibiotics should be adhered to particularly in cases of watery diarrhea that is mostly of viral origin.

Background: Movement disorders are common neurological problems, but epidemiological studies are lacking in our locality. Type of movement disorder depends on the site of the lesion and the type of pathologic changes. Objective: To estimate the prevalence rate of dystonia, chorea, and athetosis, in Al Quseir City (Red Sea Governorate), Egypt.Methods: This study is a part of a door to door survey of major neurological disorders that was conducted in Al Quseir City, Red Sea Governorate, Egypt, on a sample size of 33,285 subjects. They were screened through 3 neurologists and 15 social workers. Then, each of the three staff members of neurology subjected positive cases to meticulous clinical evaluation separately. Results: Thirteen cases with dystonia, 7 cases with chorea and 5 cases with athetosis were found with prevalence rates of 39/100,000, 21/100,000, and 15/100,000 respectively. Conclusion: Prevalence rates of dystonia, chorea, and athetosis in Al Quseir City are higher than those of the worldwide. This may be attributed to some specific environmental factors of this locality.

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Background: Chronic plantar fasciitis is a common orthopedic condition that can demonstrate hard to effectively treat. In this study, platelet-rich plasma (PRP), a concentrated bioactive blood segment wealthy in cytokines and growth factors, was compared to cortisone injection in the treatment of Chronic plantar fasciitis resistant to traditional nonoperative management. Methods: Between October 2016 and the end of September 2017; sixty patients exhibited to New Cairo clinic with chronic plantar fasciitis, 30 patients were treated with PRP infusion, and 30 patients were treated with corticosteroid injection. This study compares the efficacy of (PRP) with that of corticosteroid local injection in chronic plantar fasciitis toward the finish of follow up time of 6 months concurring AOFAS score framework out of 100. Results: At the end of follow up, group treated by plasma rich platelets injection demonstrated that mean score was 83.5 of 100. While other treated by corticosteroid injection demonstrated mean score was 61.8 of 100 .No complication detected after the end of follow up period. Conclusions: Both PRP injection and corticosteroid injection are modalities for treatment of chronic plantar fasciitis. PRP preparation is a costly and complicated procedure than corticosteroid injection but PRP is more powerful and strong than cortisone injection for the treatment of chronic plantar fasciitis. Concerning corticosteroid side effects PRP infusion is safer in treatment of Chronic plantar fasciitis.

ObjectiveTo assess the possibility of using cytological examination and DNA image-analysis of testicular fine-needle aspirates instead of open surgical biopsy in the investigation of infertile men, as testicular biopsy has long been used for investigating infertility but the interpretation of histological slides is usually subjective.Patients and methodsThirty-three men (aged 22–36 years) were evaluated for infertility and underwent both open biopsy and fine-needle aspiration of their testes. Subsequently, the needle aspirates were assessed histopathologically and cytologically, and by DNA image cytometry. The percentages of haploid, diploid and tetraploid cells were determined for each patient.ResultsThe cases were divided into four categories: (1) Complete spermatogenesis, with a DNA pattern of 1n > 2n > 4n; (2) Maturation arrest, with a DNA pattern of 2n > 4n with no haploid cells; (3) Sertoli cell-only syndrome, with a DNA pattern of only 2n, with no haploid or tetraploid cells; (4) Hypospermatogenesis, with a variable DNA pattern, i.e. mild with 1n > 2n, moderate with 2n > 1n > 4n, and marked where the DNA pattern was 2n > 4n > 1n. From the cytological and DNA image-analysis of the aspirate a diagnosis was possible that had a strong correlation with the histological diagnosis of the same case. From image analysis we could exclude interstitial cells, Sertoli cells and sperms on the static image, and differentiate between spermatozoa and spermatids based on morphological characteristics in the cytological smear. This technique can therefore be used to quantitatively determine the percentages of various cell types within the seminiferous tubules. By coupling image ploidy analysis and cytological examination of a cytological smear, spermatogenesis can be assessed accurately.ConclusionImage cytometry could be used to exclude interstitial cells, Sertoli cells and sperms on the static image and so produce an accurate assessment of spermatogenesis. A combination of ploidy and cell morphology characteristics in cytological smears provides an accurate, reproducible and easily used alternative to open testicular biopsy.

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